Incorrect GPU Folding

It seems that a lot of GPU problems revolve around specific versions of drivers. Though AMD has their own support structure, you can often learn from information reported by others who fold.

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Incorrect GPU Folding

Postby superericla » Sat Mar 14, 2015 8:46 am


I recently installed an R9 290x alongside my previous HD 7950 and while FAH seems to recognize both cards correctly, it won't fold on the 7950. I've set it up correctly for folding on the 7950 and FAH shows everything as working and running on that card, but GPU-Z shows all of the load on the 290x instead. I've tried switching to folding on the 290x and it folds on the 290x as expected, but will only fold on that card, even if another card is selected. Is there a current method of fixing this issue?

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Re: Incorrect GPU Folding

Postby bollix47 » Sat Mar 14, 2015 10:27 am

Welcome to the folding@home support forum Eric.

What you describe is a fairly common problem that occurs after adding a GPU to an existing setup. A quick test is to finish the existing work and then configure each GPU slot to use a fixed gpu-index. i.e. change the gpu-index for one GPU slot from -1 to 0 and the other slot's gpu-index from -1 to 1. Use FAHControl (aka Advanced Control) and double click the computer in the left pane then click on the Slots tab and highlight and edit each GPU slot - click on OK and Save when done, quit and restart FAHClient. The GPUs should fold separately using this method but may not be identified correctly.

The longer and possibly more accurate route would involve using one of the following guides:


A third option involves finishing any existing work and completely removing the folding@home software including data - reinstalling the AMD drivers and reinstalling the folding software. The installer does a fairly good job of identifying your GPUs properly using that sequence.
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Re: Incorrect GPU Folding

Postby 7im » Sat Mar 14, 2015 2:36 pm

Reinstalling the client should be first, as that can be the simpler solution. Then you can set indexes manually if needed and know they won't change again later.
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